Pink vertical lines, particularly during dark screens
I opened my laptop at school one day and at certain angles I got intermittent pink vertical bars on my screen. Now it happens almost every time I open my laptop, but sometimes it'll be normal until I move it. An external monitor works perfectly fine.
Also, I noticed that the bars are much more pronounced when my screen is dark, like when using zoom or "dark mode" apps. I took photos of a white screen and a black screen below for comparison.
I'm hoping to repair this issue myself as it's not worth fixing or getting a new laptop (the device requirements for my program push it to 1k). Does anyone know what part of the display is ruined? I assume it's a cable since it looks normal at some angles.